Roanoke

1985

1:100k

Roanoke

1985

1:100k

Geologic map of portion of the west foot of the Blue Ridge, Virginia

1912

Geological survey

1:125k

Roanoke

1891

1:125k

Roanoke

1890

1:125k

Roanoke

1891

1:125k

Roanoke

1891

1:125k

Bedford

1891

1:125k

Roanoke

1891

1:125k

Roanoke

1891

1:125k